'Bored' Teen Set Blaze That Trapped NYPD Officers

The distraught mother of one of the two NYPD cops who nearly died in an arson fire set by a teen who told cops he was “bored” lashed out Tuesday at the accused firebug for laughing off the tragedy.

“We saw him smiling on TV, is this a joke? We are going through so much right now,”said Miriam Guerra , mother of Officer David Guerra.

“This is a very tough time for us. Because he was bored, two officers are now fighting for their lives, and one of them is my son,” she said.

Marcell Dockery, 16, wore a wide grin for the cameras as he was walked from a Brooklyn precinct on Monday — hours after admitting to cops he set the fire that nearly killed the two officers.

“I decided to take a lighter and light the top of the mattress because I was bored,” he told cops, according to a law enforcement source.

“I saw the mattress catch fire and I tried to blow out the flames. I thought the flame was out and I looked back and the mattress was in flames. I started knocking on apartment doors to alert people to the fire.”

Dockery — who set up an entire Facebook page devoted to his “obsession’’ with fire — was charged with felony arson and assault and reckless endangerment.

“He is really obsessed with this arson thing,’’ a source said. “He’s a firebug. He was bragging about it on his Facebook page.’’

He said nothing but smirked for reporters as he was led from the 60th Precinct for his criminal court arraignment.

Dockery was previously busted in 2010 on a sealed arson rap, and admitted to cops he had a “problem” with starting blazes.

He also has sealed arrests for criminal mischief and pot possession from earlier this year.

The suspect — a 12th-floor resident of the building — was spotted on surveillance video leaving after setting the fire.

Mayor de Blasio, who along with Police Commissioner Bill Bratton visited critically wounded Guerra, 38, and Officer Rosa Rodriguez, 36, in the hospital, said Monday, “At this moment, we have two officers fighting for their lives. They are in critical but stable condition.’’

The two cops were choking and blinded by smoke as they came out of an elevator on the 13th floor, where Dockery allegedly set the mattress ablaze. The police partners frantically radioed for help.